Introducing Ballistic Data Xchange (BDX) rangefinders and riflescopes with integrated Applied Ballistics® and wireless Bluetooth® technology. This groundbreaking BDX technology enables interoperability and key ballistic holdover information to be exchanged wirelessly between SIG SAUER BDX Electro-Optics products. The foundation of the BDX system was designed for simplicity and ease of use. SIG SAUER BDX requires no new learning, and uses the same tools hunters and shooters have been using for years.